Synthesis and Magneto-Thermal properties of NiPd nanoparticles

The average crystal sizes of the Ni30Pd70 and Ni50Pd50 alloys were determined to be 3.48 ± 0.04 nm and 2.47 ± 0.11 nm, respectively, based on the XRD patterns. The magnetization measurements indicated that Ni30Pd70 sample exhibited paramagnetic property while the Ni50Pd50 alloy shows superparamagnetic and ferromagnetic behaviors at room temperature. The magnetization versus temperature measurements showed that the blocking temperature of the Ni30Pd70 alloy was less than 10 K and the blocking temperature of the Ni50Pd50 alloy was around 155 K. The specific absorption rate values were calculated to range between 0.2 and 7.6 W g−1 based on magneto-thermal experiments under the AC magnetic field ranging from 8.7 to 23.7 kA/m.